CALEXICO, Calif. – U.S. Customs and Border Protection officers at the Calexico downtown port of entry Wednesday arrested a female border crosser after discovering about a half-pound of methamphetamine concealed inside her body cavity.

The incident occurred shortly before 5 p.m. on April 23, when a CBP officer referred the 24-year-old U.S. citizen for additional inspection after she entered the port on foot.

During the inspection, a CBP narcotics detector dog alerted to the woman, leading officers to the discovery of a single wrapped package concealed under her clothing, hidden within a body cavity.

The substance inside of the wrapped package field-tested positive as methamphetamine, and has an estimated street value of more than $3,400.

The woman, a resident of Indio, California, was placed under arrest and turned over to the custody of Homeland Security Investigations agents for further processing.

She was later transported to the Imperial County Jail to await arraignment.

CBP seized the narcotics.

U.S. Customs and Border Protection is the unified border agency within the Department of Homeland Security charged with the management, control and protection of our nation's borders at and between the official ports of entry. CBP is charged with keeping terrorists and terrorist weapons out of the country while enforcing hundreds of U.S. laws.